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Commodore 
64K Add-On Memory 


Technical Manual 





commodore 


COMPUTER 


P/N 990447 


[_pantno. 
68032085- 0! 


DESCRIPTION 


REVISIONS 
| | PRODUCTION RELEASE | 


| REVPER.ECO 20th 
PTR 


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[2] IDENTIFY WITH APPLICABLE 
DASH NO. AND REVISION LEVEL. 


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ASSY DWG 


NOTES: UNLESS OTHERWISE SPECIFIED 





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LOGIC DIAGRAM - 
PET 644 MEMORY 


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2. CAPACITANCE VALUES ARE N MICROFARADS. SOY. 

\, RESISTANCE VALUES ARE IN OHMS, '/4W 25%, 

NOTES- UNLESS OTHERWISE SPECIFIED: 





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REVISIONS 





| 
| PART NO. DESCRIPTION 








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REFER TO PART SUBSTITUTION INDEX 
32/233, (TEM NO.{ FOR SUBSTITUTE. 


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PCB FAB PET 64K MEMORY 
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1, RESISTANCE VALUES ARE IN OHMS, /4w 25%, 

NOTES-LNLESS OTHERWISE SPECIFIED: 






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